Drain or sewer pipe joint.



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No. 634,!36. Patented Oct. 3, |899. J. B. HAMILTON.

DRAIN 0R SEWER PIPE JOINT.

(Applicatu Bled liar. 22, 1899.)

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No. 634,136. Patented oct, 3, ms.

.1. B. HAMlLToN.

DRAIN OR'SEWER PIPE JOINT.

KApplication filed Mar. 22, 1899.) (No Model.) 4 Sheets-Sheet 3.

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Patented ct. 3, |899.

- No. 634,I36.

J. B. HAMILTON. DRAIN 0H SEWER PIPE JOINT.

UNITED STATES PATENT EEicE.

JOHN BEAMISH HAMILTON, OF TENB'Y, ENGLAND.

DRAIN OR SEWER PIPE JOINT.

SPECIFICATION forming part of Letters Patent No. 634,136, dated October 3, 1899.

Application iledMarch 22, 1899.

T0 a/ZZ whom it may concern.-

l Be it known that I, JOHN BEAMISH HAMIL- TON, a subject of the Queen of England, residing at Tenby, England, have invented certain new and useful Improvements in or Relating to Drain and Sewer Pipe Joints, (for which I have made application in Great Britain, No. 24,722, dated November 23, 1898,) of which the folIoWi. is a specification.

This invention relates to drain and sewer pipe joints; and its object is to enable such joints to be effectively cemented, particularly in that part which lies underneath and out of sight of thevvorkman.

According to this'invention I form a troughshaped mold or casing of suitable material, preferably the saine as that of which the pipes are formed. This trough is of convenient shape externally, but internally semicircular, being curved and shaped to iit the joint. In use the trough is placed beneath the joint and either filled with cement before the pipes are laid or cement is poured into the trough after the pipes have been placed in position. By this means the under side of the joint is properly cemented the Whole Way around and atightjoint is obtained. The interior of the end of each trough is preferably so shaped that it fits closely about the pipes on either side of the joint, thus preventing the cement at the bottom from being displaced by pressure from above. There is also a provision by means of stops, against which the faucet of the contained pipe impinges, which prevents any possible disturbance of or pressure on the cement in the trough. The shape of the trough may be varied in many respects to suit requirements. The troughs may, if desired, be applied to existing faulty joints Without disturbing the pipes.

In the accompanying drawings, Figure lis a perspective view of a trough. Fig. 2 is a similar view of a modiliedform. Fig. 3 is a central longitudinal section of Fig. l, showing the manner in which a joint is made. Fig. 4: is a sectional plan, and Fig. 5 is a transverse section on the line 5 5 of Fig. 3.

A trough-shaped mold or casing A, of any suitable shape externally, such as circular, rectangular, or polygonal, is made of earth- Serial No. 710,113. (No model.)

enwa're, concrete, or thelike. Internally the trough is semicircular and is shaped to fit the joint, the diameter of the end A corresponding to the outside diameter of the pipes to be jointed. Within the end A and adjacent to it the diameter is increased at A2 to correspond to the internal diameter of the faucet of a pipe, and beyond this again at A2 the diameter corresponds to the external diameter of the faucet. Thus the parts A and A2 form two internal contiguous collars in the trough. To prevent mistakes in jointing, the trough is preferably made symmetrical, although it is obvious that the part A2 may be dispensed with at one end.

In making a joint a layer of cement or other binding material is placed Within the trough on the parts A2 and A3 and the faucet B of a pipe O upon the cement, the pipe itself resting on the part A', thereby preventing the cement beneath from being displaced by pressure from above. Binding material is now placed within the faucet B and the spigot D of the other pipe inserted into the faucet B, resting on the other end A of the trough, the joint being then finished on the upper side in the usual Way. The pipes may, however, first be placed in position on the trough and the binding material poured between them.

In order to prevent any possible disturbance of or pressure on the binding material in the trough, stops A4 are formed on the sides of the part A2 at the junctions of A2 and A3, the faucet B bearing against these stops.

If desired, the space E may also be filled with the binding material in order to further prevent displacement of the parts forming the joint.

The interior of the trough may be a smaller arc than a semicircle, although the latter is the morev convenient.

The trough may varyin shape and details to suit various requirements and is especially adapted for jointing pipes that are so laid that a workman can only get at one side.

If desired, two or more troughs may be used, so as to completely encircle the joint.

l. The herein-described device for use in forming pipe-joints consisting of the mold or ICO casing for holdin;r the cement and provided I Contained pipe ahuts; as and for tho purpose ro with thestops against which the faucet of the set forth.

contained pipe abuts; as and for the purpose i In testimony whereof I hereto seh my hand set; forth. in the presence of the two subscribing wit- 2. The herein-described device for use in nesses.

forming pipe-joints consisting of the mold or casing formed with end supports upon which the ends of the pipes rest and alsoiprovided with stops against. which the faucet of the JOHN BEAMISI-I HAMILTON. Witnesses:

CH-As. W. TURNER, JAS. P. CooMBE.

i i i 

